13F Filings History of Monashee Investment Management LLC

Latest 13F report
Q4 2025 - 12 Feb 2026
Value $
$177,461,177
Signature - Title
Jeff Muller - COO/CCO
Location
Boston, MA
Summary
This page shows a list of all the recent 13F filings made by Monashee Investment Management LLC. Form 13F is required to be filed within 45 days of the end of a calendar quarter. Monashee Investment Management LLC reported 40 stock holdings with total value $177,461,177 as of Q4 2025. Top holdings included GPCR, MDLN, SOFI, ULS, and INSM.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
Q4 2025 40 $177,461,177 +$121,939,795 -$159,192,787 -$37,252,992 GPCR, MDLN, SOFI, ULS, INSM 13F-HR 12 Feb 2026, 06:32
Q3 2025 61 $200,538,185 +$167,819,250 -$166,317,436 +$1,501,814 BBIO, FORD, WYFI, FIGR, NTSK 13F-HR 12 Nov 2025, 11:30
Q2 2025 40 $189,539,344 +$161,895,720 -$821,009,227 -$659,113,507 LLY, CORZ, KTOS, BBIO, SLDB 13F-HR 11 Aug 2025, 13:17
Q1 2025 46 $845,069,378 +$204,747,086 -$79,969,538 +$124,777,548 IVV, VOO, VEA, IEFA, VWO 13F-HR 14 May 2025, 12:07
Q4 2024 38 $729,201,978 +$99,994,000 -$279,575,741 -$179,581,741 IVV, VOO, VEA, IEFA, VWO 13F-HR 14 Feb 2025, 17:28
Q3 2024 110 $923,514,245 +$216,391,246 -$117,098,306 +$99,292,940 IVV, VOO, VEA, IEFA, VWO 13F-HR 12 Nov 2024, 16:05
Q2 2024 75 $773,399,003 +$188,244,657 -$266,364,587 -$78,119,930 IVV, VOO, VEA, IEFA, VWO 13F-HR 12 Aug 2024, 10:01
Q1 2024 105 $845,285,311 +$291,147,508 -$55,887,251 +$235,260,257 IVV, VOO, VEA, IEFA, VWO 13F-HR 14 May 2024, 09:47
Q4 2023 44 $565,545,867 +$533,607,042 -$200,238,077 +$333,368,965 IVV, VOO, VEA, IEFA, VWO 13F-HR 12 Feb 2024, 16:31
Q3 2023 75 $239,392,952 +$136,357,203 -$361,427,590 -$225,070,387 GPCR, ARM, STX, PR, ALIT 13F-HR 13 Nov 2023, 11:21
Q2 2023 68 $418,926,185 +$202,586,767 -$164,484,257 +$38,102,510 VTI, QQQ, GPCR, RDNT, DOCUSIGN INC 13F-HR 10 Aug 2023, 15:41
Q1 2023 55 $362,221,004 +$215,305,367 -$90,994,257 +$124,311,110 VTI, QQQ, IWM, SUPERNUS PHARMACEUTICALS, LIVONGO HEALTH INC 13F-HR 05 May 2023, 14:53
Q4 2022 41 $232,331,318 +$146,964,477 -$191,243,817 -$44,279,340 VTI, GTLS, CMPX, STZ, NOVAVAX INC 13F-HR 09 Feb 2023, 11:02
Q3 2022 52 $267,122,000 +$163,379,184 -$164,302,561 -$923,377 QQQ, VTI, GOSS, PM, CRBG 13F-HR 01 Nov 2022, 12:45
Q2 2022 27 $274,728,000 +$37,803,137 -$55,857,125 -$18,053,988 VTI, KDNY, SLGC, HYPR, AMT 13F-HR 12 Aug 2022, 12:00
Q1 2022 37 $345,280,000 +$69,542,276 -$87,582,902 -$18,040,626 VTI, ANTX, SEDG, HYPR, SWX 13F-HR 12 May 2022, 11:28
Q4 2021 44 $404,582,000 +$155,919,694 -$290,114,593 -$134,194,899 VTI, HYPR, SLGC, ADC, PRDS 13F-HR 07 Feb 2022, 13:49
Q3 2021 262 $541,335,000 +$318,122,820 -$595,575,641 -$277,452,821 VTI, SLGC, CRBU, UP, MRVI 13F-HR 08 Nov 2021, 20:44
Q2 2021 427 $830,621,000 +$545,285,100 -$375,550,513 +$169,734,587 VTI, AVAH, ATIP, AGTI, QSI 13F-HR 11 Aug 2021, 21:33
Q1 2021 374 $645,444,000 +$426,285,450 -$519,581,364 -$93,295,914 VTI, BEAM, PSFE, VIEW, SHC 13F-HR 13 May 2021, 17:48
Q4 2020 280 $757,344,000 +$546,359,427 -$287,192,011 +$259,167,416 VTI, SPRU, SGTX, QTRX, JWS 13F-HR 10 Feb 2021, 21:00
Q3 2020 173 $460,777,000 +$435,233,148 -$641,350,987 -$206,117,839 VTI, CZR, GDRX, QTRX, SNOW 13F-HR 12 Nov 2020, 21:46
Q2 2020 198 $667,760,000 +$646,709,174 -$169,255,671 +$477,453,503 NKLA, TMUS, REGN, DKNG, APTV 13F-HR 11 Aug 2020, 16:32
Q1 2020 61 $186,627,000 +$180,060,000 -$99,199,022 +$80,860,978 SPY, IWM, FEACU, CCXXU, HCCO 13F-HR 13 May 2020, 08:44
Q4 2019 81 $107,351,000 +$101,615,752 -$212,520,680 -$110,904,928 PFGC, CLVT, DT, PHR, MNRL 13F-HR 12 Feb 2020, 12:44
Q3 2019 112 $219,258,000 +$142,481,132 -$304,097,754 -$161,616,622 INVH, VER, ATUS, KHC, STAG 13F-HR 12 Nov 2019, 11:54
Q2 2019 159 $386,234,000 +$259,081,617 -$304,585,654 -$45,504,037 OSW, INVH, LULU, AVTR, NESR 13F-HR 07 Aug 2019, 16:58
Q1 2019 127 $434,711,000 +$363,761,610 -$88,822,388 +$274,939,222 OSW, NESR, INVH, EQH, BAND 13F-HR 13 May 2019, 11:30
Q4 2018 85 $147,678,000 +$147,678,000 -$472,169,000 -$324,491,000 NESR, FTACU, ARYAU, BWMCU, VRRM 13F-HR 11 Feb 2019, 19:55
Q3 2018 149 $472,169,000 +$363,136,484 -$428,154,446 -$65,017,962 NESR, ELAN, DLR, CNP, IFF 13F-HR 13 Nov 2018, 08:42
Q2 2018 153 $524,534,459 +$524,534,459 -$357,612,000 +$166,922,459 EQH, NESR, FBC, IQV, BJ Restatement 14 Aug 2018, 12:18
Q1 2018 141 $357,612,000 +$357,612,000 -$235,941,000 +$121,671,000 SAGE, GIS, HGV, D, ACGL 13F-HR 10 May 2018, 10:18
Q4 2017 134 $235,941,000 +$218,135,228 -$246,584,995 -$28,449,767 GDDY, J, IRM, VNTRQ, SAGE 13F-HR 09 Feb 2018, 16:01
Q3 2017 81 $262,283,000 +$262,283,000 -$236,630,000 +$25,653,000 FDC, USFD, GDDY, CSGP, INSM 13F-HR 13 Nov 2017, 12:11
Q2 2017 84 $236,630,000 +$236,630,000 -$244,713,000 -$8,083,000 ATH, BLUE, BDX, SFR, BMA 13F-HR 11 Aug 2017, 09:15
Q1 2017 82 $244,713,000 +$244,713,000 -$203,845,000 +$40,868,000 NTB, ATH, SBGI, PATK, ARE 13F-HR 12 May 2017, 14:21
Q4 2016 84 $203,845,000 +$203,845,000 -$284,348,000 -$80,503,000 GPORQ, FANG, GWR, TSRO, HWC 13F-HR 09 Feb 2017, 17:03
Q3 2016 86 $284,348,000 +$274,637,075 -$55,464,304 +$219,172,771 GXP, APC, AMH, CTRP, VIP 13F-HR 07 Nov 2016, 07:10
Q2 2016 57 $63,492,000 +$58,609,162 -$49,810,138 +$8,799,024 MTSC, DERM, ATKR, QEP, HR 13F-HR 02 Aug 2016, 09:41
Q1 2016 38 $54,747,000 +$54,747,000 -$50,229,000 +$4,518,000 STOR, REG, SLW, TRU, TRP 13F-HR 13 May 2016, 15:58
Q4 2015 25 $50,229,000 +$41,736,000 -$6,775,000 +$34,961,000 ICE, TEVA, AVGR, PE, NCLH 13F-HR 09 Feb 2016, 16:53
Q3 2015 10 $14,484,000 +$14,484,000 -$212,018,000 -$197,534,000 TWOU, FWP, AVGR, TACO, SJM Restatement 09 Feb 2016, 16:52
Q2 2015 68 $212,018,000 +$212,018,000 -$160,632,000 +$51,386,000 NEM, SERV, BKFS, MOH, MCRN 13F-HR 13 Aug 2015, 17:05
Q1 2015 67 $160,632,000 $0 $0 $0 MYL, WSTC, ARMK, ZEN, EVHC 13F-HR 20 Apr 2015, 06:32